Low speed compression adjustment controls how the suspension reacts to slow shaft movements, primarily influenced by driver input and weight transfer rather than impacts. In other words, it's not about how fast you're going, but how slowly the shock absorber is compressing.
Understanding Low Speed Compression
Low-speed compression damping manages suspension movement during:
- Braking: Controls nose dive as weight shifts forward.
- Cornering: Manages body roll and keeps the chassis stable.
- Acceleration: Minimizes squat as weight shifts rearward.
- Smooth Terrain: Handles undulations and gradual changes in the road surface.
It is crucial to understand that "low speed" refers to the speed of the shock shaft movement and not vehicle speed. This is often a point of confusion.
How Low Speed Compression Works
The low-speed compression circuit allows oil to flow through a specific valve or orifice within the shock absorber when the shaft moves slowly. Adjusting the compression damping affects the resistance to this oil flow.
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Increasing low-speed compression: Makes the suspension stiffer and more resistant to compression during these slow movements. This can reduce body roll, brake dive, and squat. However, too much can make the ride harsh over small bumps.
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Decreasing low-speed compression: Makes the suspension softer and more compliant. This can improve ride comfort and traction on uneven surfaces. However, too little can lead to excessive body roll, brake dive, and squat.
Examples of Low Speed Compression in Action
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Imagine a car entering a corner. The driver turns the wheel, initiating body roll. Low-speed compression damping resists this roll, keeping the car flatter and more stable.
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Consider a motorcycle braking hard. The front suspension compresses as weight shifts forward. Low-speed compression damping controls this compression, preventing excessive "nose dive" and maintaining control.
Adjusting Low Speed Compression
Most adjustable suspensions will have a dial or screw that allows you to adjust the low-speed compression damping. Experimenting with small adjustments is key to finding the optimal setting for your driving style and the road conditions. It's generally best to make adjustments one click at a time and test the changes before making further alterations.
